Throughout history, big economic and political shocks have often occurred in August, when leaders had gone on vacation in the belief that world affairs were quiet.   Examples of geopolitical jolts that came in August include the outbreak of World War I, the Nazi-Soviet pact of 1939 and the Berlin Wall in 1961.  Subsequent examples of economic and other surprises in August have included the Nixon shock of 1971 (when the American president enacted wage-price controls, took the dollar off gold, and imposed trade controls), 1982 eruption in Mexico of the international debt crisis, Iraq’s invasion of Kuwait in 1990, the 1991 Soviet coup, 1992 crisis in the European Exchange Rate Mechanism, Hurricane Katrina in 2005, and US subprime mortgage crisis of 2007.   Many of these shocks constituted events that had previously not even appeared on most radar screens. They were considered unthinkable. 

The phrase “black swans” has come to be used to mean a very unlikely event of this sort.  Managers of Long Term Capital Management in 1998 or of most major banks in 2008 have suggested that they could not be expected to have allowed for a financial collapse such as the one that followed the default of Russia or the one that followed the bursting of the US housing bubble, because it was a “7-standard deviation event,” that is, an event of inconceivably tiny probability…in the realm of the probability that two major meteors hit the earth at the same time.   This is nonsense.  If the statistical model says the probability of a financial crisis is that low, it is the model that is wrong.  This is like the case when “hundred-year floods” turn up every few years.

A bit more enlightened are people who talk about Knightian uncertainty or “unknown unknowns.” Ignorance with humility is better than ignorance without it.    A still better interpretation is that statistical distributions have “fat tails,” in technical terms.  But it would be nice to get beyond the Jurassic Park lesson (”don’t be surprised if things go wrong”), to be able to say intelligent things about what causes tail events. 

       What does “black swan” really mean?   In my view, it should refer to an event that is considered virtually impossible by those whose frame of reference is limited in time span and geographical area, but that is well within the probability distribution for those whose data set includes other countries besides their own and other decades or centuries. 

      Consider five examples of mistakes made by those whose memory did not extend beyond a few years or decades of personal experience in a small number of countries.

1. “All swans are white.”  The origin of the black swan metaphor was the belief that all swans were white, a conclusion that might have been reached by a 19^th century Englishman based on a lifetime of personal observation and David Hume’s principle of induction.   But ornithologists already knew that there in fact existed black swans in Australia, having discovered them in 1697.  A 19^th-century Englishman encountering a black swan for the first time might have considered it an event of unthinkably low probability, even though the relevant information to the contrary had already been available in ornithology books.  It seems a waste of an excellent metaphor to use the term just to mean a highly unexpected event.  A better use of “black swan” would be to mean an event that would not have been quite so unexpected ex ante if forecasters had cast their data net over a broader set of countries and a longer time perspective.

 2. “Terrorists don’t blow up big office buildings.”   Before September 11, 2001, some terrorist experts warned that foreign terrorists might try to blow up tall American office buildings.   These warnings were not taken seriously by those in power at the time.   Many Americans did not know the history of terrorist events taking place in other countries and in other decades.  

 3. “Housing prices don’t fall.” Many Americans up to 2006 based their behavior on the assumption that nominal housing prices, even if they slowed down, would not fall.   After all, “they never had before,” which meant that they had not fallen in living memory in the United States.   They may not have been aware that housing prices had often fallen in other countries, and in the US before the 1940s.  Needless to say, many a decision would have been made very differently, whether by indebted homeowners or leveraged bank executives, if they had thought there was a non-negligible chance of an outright decline in prices.

 4. “Volatilities are low.”   During the years 2004-06, financial markets perceived market risk as very low.  This was most nakedly visible in the implicit volatilities in options prices such as the VIX.  But it was also manifest in junk bond spreads, sovereign spreads, and many other financial prices.  One of the reasons for this historic mis-pricing of risk is that traders were plugging into their Black-Scholes formulas estimates of variances that went back only a few years, or at most a few decades (the period of the late “Great Moderation”).  They should have gone back much farther - or better yet, formed judgments based on a more comprehensive assessment of what risks might lie in wait for the world economy.

 5. “Big banks don’t fail.”   ”Governments of advanced countries don’t default.”   ”European governments don’t default.”  Enough said.  Greece’s debt troubles, in particular, should not have caught anyone by surprise, least of all northern Europeans.   The perception was that euro countries were fundamentally different from emerging markets, that like Germany they were free of default risk.  Suddenly, in 2010, the Greek sovereign spread shot up, exceeding 800% by June. But even when the Greek crisis erupted, leaders in Brussels and Frankfurt seemed to view it as a black swan, instead of recognizing it as a close cousin of the Argentine crisis of ten years earlier, the Mexican crisis of 1994, and many others in history, including among European countries.

      My next blog post will list some of the shocks that, even though low-probability, have high enough probability that they should be treated as thinkable rather than unthinkable, they would have great consequences, and they therefore warrant some advance preparation.

Any solution to the euro crisis must meet two objectives.  One is short run and the other is long run.  Unfortunately they tend to conflict.

The first necessary objective is to put Greece, Portugal, and other troubled countries back on a sustainable debt path, defined as a long-term trajectory where the ratio of debt to GDP is declining rather than rising.  Austerity won’t restore debt sustainability.  It has raised debt/GDP ratios, not lowered them.   A write-down would do it.  New bigger bail-outs might too, or might not.  But either write-downs or bailouts would then create moral hazard and thus make even it even harder to satisfy the second necessary objective.

That second objective is to reform the system so as to make it less likely that similar debt crises will recur anew in the future.   Fiscal rectitude in the long run is indeed the way to accomplish this.  But it is hard to commit today to fiscal rectitude in the future.  Rules to cap debt such as the Maastricht fiscal criteria, “no bailout” clause and Stability and Growth Pact (SGP) didn’t work because they were not enforceable.

Eurobonds could be part of the solution, if designed properly to take into account fiscal fundamentals, both short term and long term.  These are defined as government bonds that would be the liability of euroland in the aggregate.

The creation of a standardized Eurobond market would bring a boost to help a reform plan come together, badly needed in light of the damage that years of failed European summits have done to official credibility.  That boost is the latent global portfolio demand for a good eurobond. 

Even when the euro was at the height of its success five years ago, its international currency status suffered from lack of a counterpart to the US Treasury bill market, a deep, liquid, standardized market in low-risk bonds.  Bonds are issued by the 17 member governments.  This fragmentation has hindered European financial integration and impeded any bid by the euro to rival the US dollar as international reserve currency.  Central banks in China and other big developing countries are still desperate for an alternative form in which to hold their foreign exchange reserves – an alternative to holding US government securities, that is.   US Treasury bills pay extremely low interest rates, and the value of the dollar has been on a negative downward trend for 40 years (ever since President Richard Nixon took the dollar off gold and devalued in 1971).   Despite all of Europe’s problems, a Eurobond would be attractive to central bankers and other portfolio investors around the world, both to achieve higher expected returns than on US treasury bills and to diversify risk.

But that latent global demand for Eurobonds will not come to the table unless they are by design backed up with solid economic and political fundamentals.

Germany opposes Eurobonds on the sensible grounds that if individual national governments were allowed to issue them freely, the knowledge that somebody else was paying the bill would make the incentive for member countries to spend beyond their means worse than ever.  This version of Eurobonds would be bound to fail, both economically and politically.   This seems to be the version that some opponents of austerity have in mind, such as the new French president, François Hollande, though it is hard to tell.

A different version of the Eurobond proposal has recently begun to gain traction in Germany.  The German Council of Economic Experts - usually called “wisemen,” although the council includes a woman — proposed last year a European Redemption Fund (hence yet another new acronym, ERF).   The plan would convert into defacto Eurobonds the existing debt of (approved) member nations in excess of 60% of GDP, the supposed threshold specified in the Maastricht and SGP criteria.  The ERF bonds would then be paid off over 25 years.   Steps toward this proposed solution to the short-term debt problem would be paired - politically and logically - with approval of the Fiscal Compact, Angela Merkel’s proposed solution to the long-term problem.

But this seems upside down.  Yes, any solution to save the euro will have to ask German taxpayers to put still more money on the line.   But to use Eurobonds as the mechanism for eliminating the big debt overhang looks like the nail in the coffin of the longer term moral hazard objective.  It offers absolution precisely on the margin where countries in the future will in any case have the most trouble resisting the temptation to sin again, the margin where they cross the 60% threshold.

If the Fiscal Compact or proposed “debt brakes” could be relied on as a firm constraint on future behavior, then fine.  But there is little reason to believe that they could, especially after confirmation of the precedent that individual spendthrifts are relieved of their excess debt burdens.

The new Fiscal Compact is unlikely to succeed where the Maastricht criteria failed, the “no bailout” clause failed, and the SGP failed.  It is less credible that excessive deficits will be punished than it was three years ago - and it wasn’t credible even then.   Rules don’t work without some enforcement mechanism.   The problem with the SGP wasn’t that it wasn’t written strictly enough or even that it wasn’t incorporated into the constitutions of the member countries as the Fiscal Compact would have it.  The problem with the SGP was that no matter how many times a member government’s deficit or debt exceeded the specified limit, the country’s officials could say (often sincerely) that the gap was the fault of unexpected circumstances such as slow growth and low tax receipts and that they expected to do better next time.  Even if some court in Brussels or Frankfurt were given life-and-death power to enforce the rules, exactly which officials would it punish for violations, and how?  No version of the SGP or Fiscal Compact or debt brake proposals has ever provided a satisfactory answer to that question.

Hope by some Europeans that the Fiscal Compact would finally make enforcement credible by writing the constraints into the constitutions of member states might be based on misunderstanding of the US system.   One can see the logic:   The US federal government has never bailed out one of the 50 states and nobody expects it to do so in the future.  How has the US solved the problem of moral hazard that so plagues euroland?  The states have rules to limit deficit spending.  That must be the answer !  (Well, 49 of the states have rules; these laws are voluntary on the part of the states, and Vermont does not have one).  State laws are not the primary explanation for the absence of US moral hazard.  The primary explanation is that the right precedent was set in 1841 when the federal government declined the opportunity to bail out 8 troubled states and let them default.  Euro leaders should have done the same with Greece a year or two ago. A second (related) explanation for absence of moral hazard in the US federal system is that, ever since the 1840s, when American states start to run up questionable levels of debt the private market demands an interest rate premium to compensate for the default risk.   The premium acts as an automatic disincentive to further profligacy.  This mechanism should have operated after the euro was created in 1999, but it never did:  Greece and the other high-borrowers were able to borrow at interest rates that — disturbingly – had fallen virtually to the same levels as German bunds.  

The final explanation is that when citizens started to ask more from their public sectors governments in
the 20^th century (defense, entitlement spending, etc.), the expansion in the case of the United States took place at the federal level, not the state level.  For this reason even the fiscally most dysfunctional of the American states, which is probably California, does not operate on a scale remotely like European national governments.   US federal spending is 24% of GDP versus an EU budget of 1.2% of GDP.  Europeans are not ready to transfer most spending and taxation from the national to the federal level.   And even if they decide some day that they are ready, if the bailout precedent still stands then this federalization will not solve the moral hazard problem regarding the spending that remains at the national level.

The version of Eurobonds that might work is almost the reverse of the Germans’ Redemption Fund proposal.  It goes under the more colorful name of “blue bonds,” originally proposed two years ago by Jacques Delpla and Jakob von Weizäcker at the think tank Bruegel.   Under this plan, only debt issued by national authorities below the 60% criteria could receive eurozone backing, be declared senior, and effectively become Eurobonds.  These are the “blue bonds” that would be viewed as safe by investors.  When a country issued debt above the 60% threshold, the resulting junior “red bonds” would lose eurozone backing.   The individual member state would be liable for them.  This proposal structures the incentives “right side up.”

The blue bonds proposal has been extensively debated in Europe.  As usual in such controversies, many participants in the euro debate fixate on one evil or the other –moral hazard or austerity — and fail to grapple with practical proposals to balance the two.

As I see the plan, the private markets could make the judgment as to whether a country was in the process of crossing the threshold, even before the final statistics were available, and therefore assess whether default risk on the new red bonds required an interest rate premium.  If private investors judged that the new debt had genuinely been incurred in temporary circumstances beyond the government’s control (say a weather disaster), then they would not impose a large interest rate penalty.  Otherwise, the sovereign risk premium mechanism would operate on the red bonds, much as it does among American states, and much as it did in Italy, Greece and the others before they joined the euro.   Similarly, if the ECB after 2000 had operated under a rule prohibiting it from accepting as collateral the debt of SGP-noncompliant countries, the resulting default risk premum might possibly have headed off the entire euro sovereign debt problem early in the decade.

The point is that the red-bond mechanism would be truly automatic, as desired.  Perhaps in ambiguous borderline cases the judgment whether a country had truly exceeded the limit, or whether it was still in good standing so that its debt qualified for eurobond status, would ultimately have to be made by a eurozone agency or court, with an inevitable lag.  But, in the meantime, private investors could apply informed views about the merits from moment to moment.  The resulting market interest rates would provide the missing discipline. Compliance would not rely on discretionary letters from Brussels bureaucrats, which have proven toothless no matter how many exclamation points are put at the end of their penalty threats.  Nor would it require unenforceable debt ceilings legislated at the national level.  The U.S. has one of those too.  It has never had any effect, except on a very few occasions, when Congress has actively used the debt ceiling law to make everything worse.

Of course the euro countries cannot jump to a blue bond regime without first solving the problems of debt overhang and troubled banks that are front and center.   Otherwise, in today’s world, the plan by itself would be destabilizing since it would put almost all countries immediately into the red.   The debt paths that are currently unsustainable in many countries result from the combination of debt/GDP ratios that are already far in excess of 60%, combined with very high sovereign spreads and recessions.    Relieving them of responsibility for debt up to 60% would be substantial assistance, but would not in itself restore sustainability to all members.

Thus Eurobonds are emphatically not the complete solution to these vexing problems.  It is hard to say, at this late date, what the right short-term solutions are.   In Greece’s case, it may be forced to default and to drop out of the euro.  The banks and sovereigns in other countries will then have to be insulated from the conflagration through a combination of acronymic “bailout” money (EFSF, ESM, ECB…) and serious policy conditionality, as always.  Creating this fire break between Greece and the heart of Europe would have been far easier two years ago, before debt/GDP levels and sovereign spreads climbed so high and before the credibility of the euro leaders sank so low, or even one year ago.  Now the fire has spread over a much larger area and there are no natural gaps in sight for creating firebreaks.

But one thing seems clear.  German taxpayers, whose longstanding fears that they would be asked to bail out profligate Mediterranean euro members have been proven correct, will not be happy when asked to put up still more money in the cause of European integration by the same elites whose assurances of the last 20 years have proven false.   They will at a minimum need some credible reason to believe that future repetitions have been rendered unlikely, that the bailout is “just this once.”   Official assurances do not constitute that credible reason.    Nor does the Fiscal Compact, in itself.   The red bonds / blue bonds scheme just might.

[A much condensed version of this posting appears in Project Syndicate, June 14, 2012.  This fuller version also appears on Vox, June 28, 2012.]

In the 1955 movie Rebel Without a Cause, James Dean and a teenage rival race two cars to the edge of a cliff in a game of chicken.  Both intend to jump out at the last moment.  But the other guy miscalculates, and goes over the cliff with the car.

This is the game that is being played out in Washington this month over the debt ceiling.  The chance is at least 1/4 that the result will be similarly disastrous.    

It is amazing that the financial markets continue to view the standoff with equanimity.   Interest rates on US treasury bonds remain very low, 3% at the ten-year maturity.   Evidently it is still considered a sign of sophistication to say “This is just politics as usual.  They will come to an agreement in the end.”  Probably they will.  But maybe not.   (I’d put a ½ probability on an agreement that raises the debt limit, but just muddles through in terms of the genuine long term fiscal problem.  That leaves at most a ¼ probability of a genuine long-term solution of the sort that President Obama apparently proposed last week - described as worth $4 trillion over ten years.)

My advice to investors is to shift immediately out of US treasuries and into high-rated corporate bonds.  If the worst happens, you will probably save yourself from a big capital loss within the next month.  If not, there is no harm done.

The game is not symmetric.  The Republicans are the ones who are miscalculating.   Evidently they are confident of prevailing:  they rejected the President’s offer, even though he was willing to cut entitlement programs.

The situation is complicated because there are a number of different people crammed into the Republican car.    There is one guy who is obsessed with the theory that, come August 3, the federal government could retain its top credit rating if it continued to service its debt by ceasing payment on its other bills.  But this would mean failing to honor legal obligations that have already been incurred (paying suppliers for paper clips that have already been bought, paying soldiers their wages for last month’s service, sending social security recipients their checks, etc.).  This is like observing that the cliff is not a 90 degree drop-off, but only 110 degrees.   It doesn’t matter: the car would still go crashing into the ocean far below.   The government’s credit would still be downgraded and global investors would still demand higher interest rates to hold US treasuries, probably on a long-term basis. 

There are other guys (and gals) in the car who are even more delusional.   They are dead set on a policy of immediately eliminating the budget deficit (e.g., those opposed to raising the debt ceiling no matter what, or those campaigning for a balanced budget amendment), and doing it primarily by cutting nondefense discretionary spending.  This is literally impossible, arithmetically.  But they honestly don’t know this.   It is as if they were insisting that the car can fly.   Sometimes it can be a good bargaining position to adopt a very extreme position.  But if you are demanding that the car flies, you are not going to get your way no matter how determined you are. 

It seems likely that the man in the driver’s seat - House Speaker John Boehner - does realize that his fellow passengers don’t have the facts quite right.   But there is also a game of chicken going on within the Republican car.  The crazies have said they will oppose in the next Republican primary election any congressman who votes to raise the debt ceiling or to raise tax revenues.   (Yes, they think they would support someone who would eliminate the budget deficit primarily by cutting non-defense discretionary spending; but remember, this is arithmetically impossible.)   The guy who is riding shot-gun in the car - the one who believes the car can fly — is trying to put his foot on top of Boehner’s on the accelerator pedal.   

It seems to me that Boehner, too, is miscalculating.  Given that the car can’t fly, the crazy guy is probably going to oppose him in the primaries no matter what he does.   So I don’t see what his plan is.   But whatever it is, he has made it clear that he doesn’t plan to agree to any increase in tax revenues.   

As a result the Republican leadership is in the remarkable situation of refusing to agree to Obama’s offer to solve the problem so long as the solution includes raising tax revenue, even if it is via such measures as ending distortionary subsidies for ethanol, oil companies, and corporate jets.

If I had to guess:   The financial markets will wake up just before August 3.   US bond prices will finally fall.  The market reaction will shock the Republican leadership into action.  (Precedents include the delayed congressional passage of the unpopular TARP legislation in the fall of 2008 and the delayed passage of an unpopular IMF quota increase 10 years earlier.)   They will finally make the small but necessary concessions on tax revenues.   But by then it might be too late.

My preceding blogpost identified three mistakes made by leaders of the European Economic and Monetary Union in dealing with Greece.   But what is done is done.  The mistakes now lie in the past.  How can Europe’s fiscal regime be reformed to avoid future repeats of this crisis?  

The reforms that are now underway are not credible.  (”We are going to make the fiscal rules more explicit and make sure to monitor them more tightly next time.”)    Similarly, most proposals for how to put teeth into the rules are not credible — penalties such as monetary fines or loss of voting privileges. 

It is too late for Greece. But it is not too late for a euroland reform that would help avoid the re-emergence of unsustainable sovereign debt levels next time around by applying the lesson of mistake number two: to adjust the ECB policy of accepting the debt of all member states as collateral.  This is the policy that short-circuited warning signals that the private markets would otherwise have sent via interest rates during 2002-2007.  

My proposal:   The eurozone should in the future adopt a rule that whenever a country violates the fiscal criterion of the Stability and Growth Pact (say, a budget deficit in excess of 3% of GDP, structurally adjusted), the ECB must stop accepting that government’s debt as collateral.  This system would achieve the elusive objective of true automaticity.   If a country exceeded the threshold for justifiable reasons, such as natural disaster, the private markets could perceive that and impose little or no default risk premium.   No judgment of the merits by bureaucrats or politicians would be required.   More likely, for periphery countries, the result of such a re-classification would be the re-emergence of sovereign spreads of moderate magnitudes, in between the extremes of the 2002-07 lows and the 2009-11 highs (see chart).  The interest rate premium would send a message far more credibly, forcefully, and promptly than any warning that any Brussels bureaucracy will ever turn out.  

This is how it works among the U.S. states and municipalities.  Despite the absence of their own currencies, the recurrence of dysfunctional local politics and excessive deficits, and even a history of state defaults in the 19^th century, federal bailouts are not delivered and are not expected.   Without some such device, the new European Stability Mechanism is in danger of becoming a mechanism for instability.

[Niels Thygesen made the case in favor of the current reform track in "Governance in the Euro Area" at the Challenge of Europe session of INET's Annual Conference, Bretton Woods, NH, April 10, 2011. I gave my comment there as well. (Video)]

[Comments can be posted on the Vox.eu site (which has the copyright.)]

    
      In 2008, the global financial system was grievously infected by so-called toxic assets originating in the United States.  As a result of the crisis, many have asked what fundamental rethinking will be necessary to save macroeconomic theory.  Some answers may lie with models that have in the past been applied to fit the realities of emerging markets — models that are at home with the financial market imperfections that have now unexpectedly turned up in industrialized countries.  The imperfections include default risk, asymmetric information, incentive incompatibility, procyclicality of capital flows, procyclicality of fiscal policy, imperfect property rights, and other flawed institutions.   To be sure, many of these theories had been first constructed in the context of industrialized economies, but they had not become mainstream there.   Only in the context of less advanced economies were the imperfections undeniable.  There the models thrived.     
 

     An analogy can capture the apparently novel suggestion that emerging markets may have important lessons for advanced countries.   In the latter part of the nineteenth century most of the vineyards of Europe were destroyed by the microscopic aphid Phylloxera vastatrix. Eventually a desperate last resort was tried: grafting susceptible European vines onto resistant American root stock.   Purist French vintners initially disdained a strategy that they considered would compromise the refined tastes of their grape varieties. But it saved the European vineyards, and did not impair the quality of the wine. The New World had come to the rescue of the Old World.

     The academic literature on macroeconomics and finance in developing countries hardly existed 30 years ago.  But by now it has grown very large — large enough to deserve a survey of its own.  I review much of this research in a survey titled “Monetary Policy in Emerging Markets.”  It appears as a chapter in the Handbook of Monetary Economics, edited by Ben Friedman and Michael Woodford, which has just this week become available from Elsevier Publishing.   Among the hundreds of authors represented in the survey are Caballero, Calvo, Dooley, Dornbusch, Edwards, Reinhart and Velasco, as well as many younger scholars.  Again, although financial opening gave capital flows a central role in the emerging market models, the need to allow for imperfections in these markets has always been clear.   It is also what gives the models so much relevance today, not just for theory but for policy as well.   Raghu Rajan and Simon Johnson point out that some of the institutional failings that we associate with financial sectors in developing countries, such as distorted incentives and undue political influence, also apply to the United States and other advanced countries.  Among other areas of economic policy where the North could draw useful lessons from small countries in the South as to how to address the problems, in earlier blogposts I have given the example of the procedures that Chile has used over the past decade to achieve countercyclical fiscal policy.  

[Comments can be posted on the Belfer Center site.]